Coherence loss in phase-referenced VLBI observations (Corrigendum)

I. Martí-Vidal; E. Ros; M. A. Pérez-Torres; J. C. Guirado; S. Jiménez-Monferrer; J. M. Marcaide

doi:10.1051/0004-6361/201014203e

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Erratum

This article is an erratum for:
[https://doi.org/10.1051/0004-6361/201014203]

Issue		A&A Volume 533, September 2011


Article Number		C1
Number of page(s)		1
Section		Astronomical instrumentation
DOI		https://doi.org/10.1051/0004-6361/201014203e
Published online		07 September 2011

A&A 533, C1 (2011)

Coherence loss in phase-referenced VLBI observations (Corrigendum)

I. Martí-Vidal¹, E. Ros²^,1, M. A. Pérez-Torres³, J. C. Guirado², S. Jiménez-Monferrer² and J. M. Marcaide²

¹ Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
e-mail: imartiv@mpifr-bonn.mpg.de
² Universitat de Valencia, C/ Dr. Moliner 50, 46100 Burjassot, Spain
³ Instituto de Astrofsica de Andaluca, CSIC, Apdo. Correos 2004, 08071 Granada, Spain

Abstract

We report an erratum in an equation that models the relation of the limiting dynamic range to the angular distance between target and calibrator.

Key words: instrumentation: interferometers / atmospheric effects / techniques: interferometric / errata, addenda

Erratum for: A&A 515, A53 (2010), DOI: 10.1051/0004-6361/201014203

© ESO, 2011

In Sect. 3.1 of Martí-Vidal et al. (2010b), we gave the following expression (Eq. (3)) $f_{at} = K \frac{ν}{\sqrt{Δ t} \sin θ},$ $\begin{equation} f_{\textrm{at}} = K\frac{\nu}{\sqrt{\Delta t}\sin{\theta}}, \label{mal} \end{equation}$ (1)where K ~ 12.4 h^0.5 GHz^-1. This equation is inconsistent with the results reported in Sect. 5.3 of Martí-Vidal et al. (2010a). The correct expression should be, instead, $f_{at} = K \frac{ν}{\sqrt{Δ t}} \sin θ,$ $\begin{equation} f_{\textrm{at}} = K\frac{\nu}{\sqrt{\Delta t}}\sin{\theta}, \label{bien} \end{equation}$ (2)

where K ~ 0.012 h^0.5 GHz^-1. This new equation implies a different value of the constant k₁ in Eq. (4). The original value reported for k₁ was ~63, while the correct value is ~1.3 × 10⁴.

Although Eq. (3) (together with the constants K and k₁) was incorrectly written in the text, we emphasize that all the figures in the paper were generated, indeed, using the correct equations and constants.

References

Martí-Vidal, I., Guirado, J. C., Jiménez-Monferrer, S., & Marcaide, J. M. 2010a, A&A, 517, A70 [NASA ADS] [CrossRef] [EDP Sciences] [Google Scholar]
Martí-Vidal, I., Ros, E., Pérez-Torres, M. A., et al. 2010b, A&A, 515, A53 [NASA ADS] [CrossRef] [EDP Sciences] [Google Scholar]

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[1] Martí-Vidal, I., Guirado, J. C., Jiménez-Monferrer, S., & Marcaide, J. M. 2010a, A&A, 517, A70 [NASA ADS] [CrossRef] [EDP Sciences] [Google Scholar]

[2] Martí-Vidal, I., Ros, E., Pérez-Torres, M. A., et al. 2010b, A&A, 515, A53 [NASA ADS] [CrossRef] [EDP Sciences] [Google Scholar]